HealthFit
iOS iPadOSHealthFit is the go-to for Apple Watch reviewers. If you love working out with Apple Watch, but you need more advanced fitness stats, HealthFit is for you.
HealthFit
is somehow the native iOS version of Veloviewer but for all kinds of
sports you can track with your Apple Watch. You get great insights and
statistics. In addition, you can import and export .gpx and .fit files.
It's just my go-to app for everything Apple's Fitness app can't do. (If
you're still not convinced and are looking for something similar, look
at RunGap.)